Reset changes method

lib/abstract-class.js

@@ -394,13 +394,18 @@ AbstractClass.prototype.propertyChanged = function (attr) {
 AbstractClass.prototype.reload = function (cb) {
     var obj = this.constructor.cache[this.id];
     if (obj) {
+        obj.reset();
+    }
+    this.constructor.find(this.id, cb);
+};
+
+AbstractClass.prototype.reset = function () {
+    var obj = this;
     Object.keys(obj).forEach(function (k) {
         if (obj.propertyChanged(k)) {
             obj[k] = obj[k + '_was'];
         }
     });
-    }
-    this.constructor.find(this.id, cb);
 };
 
 // relations